I've used a lot of lights in the past... mostly Surefire, though some were Energizer's Hard Case. While I like these lights for personal protection, etc... they are not suited for storage auctions. Batteries are usually CR123 which can cost $5/ea. That adds up fast. when expected run time is 1-5 hours at $120 lumens on average. Ouch!
I just bought the Stanley 1M for $17.88 from Walmart. By far the best value! 1 Million Candles and 580 lumens. I'd need binoculars to see as far as this light goes. But the real plus is that it comes with car charger, wall charger, 3 hr. run time, and 1 year guarantee.
If you need a good light for cheap... this is the best one. Even if it only lasts as long as the 1 year guarantee, then it only costs $1.49/month! Best value.